Niels Bohr had already been deceased for 8 yrs. But Aage Bohr, Niels's son, won the H.C. Ørsted Medal for his work in physics (couldn't find much specific without spending too much time on it, and I have class to study for, whoops) and he stepped down from being head of the Niels Bohr Institute that year. At the same time Stephen Hawking "published a proof that if the universe obeys the general theory of relativity and fits any of the models of physical cosmology developed by Alexander Friedmann, then it must have begun as a singularity." (I tried /singularity on D000, no dice.) I'll try looking more into on Friedmann and Hawking's work in 1970 later.

ETA: also, "In 1970, Hawking postulated what became known as the second law of black hole dynamics, that the event horizon of a black hole can never get smaller"

Edit #2 because procrastination is fun: "just as in the *law of thermodynamics,*" --D000/atom page. The laws of black hole dynamics "seek to reconcile the laws of thermodynamics with the existence of black-hole event horizons."